post video embed, and post excerpt change
post video embed, and post excerpt change

Adds functionality for FitVids post videos to show. Also removes the
hard post excerpt limit and allows either the <!--more--> tag, or
otherwise, publishes up until the end of the first paragraph.

pashanitw/pashanitw.github.com,pashanitw/pashanitw.github.com,pashanitw/pashanitw.github.com